Decarbonylation
脱羰作用
🗣️ 情景例句
Haven't we met before?
我们没见过吗？
We are having a party and would like you to come.
我们要开派对，能请您光临吗？
Then I arrived home at six o'clock yesterday evening. He telephoned again.But I didn't answer the phone!
后来，我昨晚6点钟回到家里。他又打来电话，但我没接。